Composite catalyst and preparation method of composite catalyst as well as application of composite catalyst

Abstract

The invention relates to a composite catalyst and a preparation method of the composite catalyst as well as an application of the composite catalyst, and belongs to the technical field of a solar battery counter electrode. The preparation method comprises the following steps: (1) solving indium source and sulfur source in water and adding a solvent and a template agent to be reacted for 4 hours to 24 hours at the temperature ranging from 130 degrees to 300 degrees; (2) ball-milling the product required in (2) with isopropanol to acquire a solvent I; ball-milling carbon materials with the isopropanol to acquire a solvent II; mixing the solvent I with the solvent II uniformly. The beneficial effects of the invention are that the composite catalyst prepared through the preparation method is used as the counter electrode material into DSC, and photoelectric converting efficiency is 8.66%; under the same condition, a Pt counter electrode is used as a reference electrode, and the photoelectric converting efficiency is 8.75%. Therefore, compared with the conventional technology, the photoelectric converting efficiency of the invention is equal to that of the conventional technology.

Description

technical field [0001] The invention relates to a composite catalyst and its preparation method and application, belonging to the technical field of solar cell counter electrodes. Background technique [0002] In recent years, dye-sensitized solar cells (DSCs) have been favored by many scholars. Although the current research on DSC has made a series of progress and breakthroughs, the following problems still need to be solved: 1. The use of liquid electrolyte leads to difficulties in battery packaging; 2. The long-term stability of the battery is poor; 3. The use of metal Pt in the counter electrode leads to High battery cost etc. "Improving the efficiency of solar cells and systems and reducing the manufacturing cost of photovoltaic systems" is the most perfect ideal in the photovoltaic industry, and it is also applicable to DSC. Limited by the characteristics of this type of battery itself, the above problems 1 and 2 are relatively difficult to solve, so the third point ...

AI Technical Summary

Problems solved by technology

Limited by the characteristics of this type of battery itself, the above problems 1 and 2 are relatively difficult to solve, so the third point becomes a breakthrough point, so the study of non-platinum counter electrode catalytic materials has become the top priority of the current research work

[0004] As DSC counter electrode catalytic materials, carbon materials (Wu M X, Lin X, et al. Energy Environ. Sci., 2011, 4, 2308-2315; Simon J Thompson, et al. J. Phys. 2013, 46.2: 024007) It has been proven to have good electrical conductivity and catalytic performance, but due to the poor adhesion of carbon materials, it is greatly limited in application

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